﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Threading;

namespace Learn_multicastDelegate
{
    class Program
    {
        // 同步
        //static void Main(string[] args)
        //{
        //    Student stu1 = new Student() { ID = 1, Pencolor = ConsoleColor.Yellow };
        //    Student stu2 = new Student() { ID = 2, Pencolor = ConsoleColor.Green };
        //    Student stu3 = new Student() { ID = 3, Pencolor = ConsoleColor.Blue };

        //    Action action1 = new Action(stu1.DoHomeWork);
        //    Action action2 = new Action(stu2.DoHomeWork);
        //    Action action3 = new Action(stu3.DoHomeWork);

        //    // 单播委托
        //    action1();
        //    action2();
        //    action3();

        //    // 多播委托
        //    action1 += action2;
        //    action1 += action3;

        //    action1();
        //}
    
        // 隐式异步调用
        //static void Main()
        //{
        //    Student stu1 = new Student() { ID = 1, Pencolor = ConsoleColor.Yellow };
        //    Student stu2 = new Student() { ID = 2, Pencolor = ConsoleColor.Green };
        //    Student stu3 = new Student() { ID = 3, Pencolor = ConsoleColor.Blue };

        //    Action action1 = new Action(stu1.DoHomeWork);
        //    Action action2 = new Action(stu2.DoHomeWork);
        //    Action action3 = new Action(stu3.DoHomeWork);

        //    action1.BeginInvoke(null, null);
        //    action2.BeginInvoke(null, null);
        //    action3.BeginInvoke(null, null);
        //}

        // 显示异步调用
        static void Main()
        {
            Student stu1 = new Student() { ID = 1, Pencolor = ConsoleColor.Yellow };
            Student stu2 = new Student() { ID = 2, Pencolor = ConsoleColor.Green };
            Student stu3 = new Student() { ID = 3, Pencolor = ConsoleColor.Blue };

            //Thread thread1 = new Thread(new ThreadStart(stu1.DoHomeWork));
            //Thread thread2 = new Thread(new ThreadStart(stu2.DoHomeWork));
            //Thread thread3 = new Thread(new ThreadStart(stu3.DoHomeWork));

            //thread1.Start();
            //thread2.Start();
            //thread3.Start();

            Task task1 = new Task(new Action(stu1.DoHomeWork));
            Task task2 = new Task(new Action(stu2.DoHomeWork));
            Task task3 = new Task(new Action(stu3.DoHomeWork));

            task1.Start();
            task2.Start();
            task3.Start();
        }
    }

    class Student
    {
        public int ID { get; set; }
        public ConsoleColor Pencolor { get; set; }

        public void DoHomeWork()
        {
            for (int i = 0; i < 5; i++)
            {
                Console.ForegroundColor = this.Pencolor;
                Console.WriteLine("Student {0} doing homework {1} hour(s).", this.ID, i);
                Thread.Sleep(1000);
            }
        }
    }
}
